PHOTOS: A large fire erupted in an encampment off of Hartford Avenue in Wethersfield on Tuesday. The Wethersfield Volunteer Fire Department said it responded shortly after 4:30 p.m. to reports of heavy smoke in the area of the interchange connecting the Silas Deane Highway with Route 5/Route 15. According to the department, fire officials subsequently discovered a large fire in a homeless encampment under the Route 5/Route 15 bridge. Two fire engines were dispatched to the scene to bring the fire, which officials said posed a threat to several nearby propane tanks, under control. The cause of the fire is unknown.